Tesla S dirt in speed sensor. Bms_f027 BMS_w027

[ChristianMM]

Have not been able to work on it since I cannot reset the immobilizer even with tesla tool box so it has just been sitting there. I changed the battery heater still pending the ldu since both those were having isolation issues. I might end up taking it to the dealer since not sure if there is a way to reset the immobilizer

Any updates on f027?

 

[CyberShy]

I saw some vids on YT about finding wetness around the speed sensor and it seems that Tesla and the aftermarket has a fix for this, but once the speed sensor gets wet, it's too late.

You want to search for Tesla coolant bypass. I'm afraid that you have a lot of work ahead of you even if it's not too late.

Here's one video as a sample:

 

[ChristianMM]

I saw some vids on YT about finding wetness around the speed sensor and it seems that Tesla and the aftermarket has a fix for this, but once the speed sensor gets wet, it's too late.

You want to search for Tesla coolant bypass. I'm afraid that you have a lot of work ahead of you even if it's not too late.

Here's one video as a sample:

So BMS_f027 is related to this video?
Just that I haven’t been able to find what the alert means to fix. Tesla told me I need a hv battery. It’s so confusing since they don’t give any info just that I need to replace the hv battery. Thanks

 

[CyberShy]

You may have more than just the BMS_f027 fault.